Portal:Cetaceans

From Wikipedia, the free encyclopedia
Jump to: navigation, search
EditCetaceans
A Sperm Whale fluke
The order Cetacea includes the whales, dolphins and porpoises and comprise the mammals most fully adapted to aquatic life. It contains 81 known species organized in two suborders: Mysticeti (baleen whales) and Odontoceti (toothed whales, which includes dolphins and porpoises). The order contains several record breaking species, with the Blue Whale being the largest animal known, and the Orca being the most widely distributed animal.

Cetaceans evolved from land mammals that adapted to marine life about 50 million years ago. Over a period of a few millions of years during the Eocene, the cetaceans returned to the sea. Their body is fusiform (spindle-shaped), the forelimbs are modified into flippers, the tiny hindlimbs are vestigial and the tail has horizontal flukes. Cetaceans are nearly hairless, and are insulated by a thick layer of blubber.

Cetaceans inhabit all of the world's oceans, as well as some rivers in South America and Asia. Some species can be found across the globe.

Cetology is the branch of marine science associated with the study of cetaceans.

Show new selected content...
Edit Selected article
Aerial view of a Fin Whale.

The Fin Whale (Balaenoptera physalus), also called the Finback Whale, is a mammal which belongs to the baleen whales suborder. It is the second largest whale and also the second largest animal living, after the Blue Whale. The Fin Whale can grow to nearly 27 metres (88 ft) long. It is found in all the world's major oceans, and in waters ranging from the polar to the tropical. It is absent only from waters close to the ice pack at both the north and south poles and relatively small areas of water away from the large oceans. The highest population density occurs in temperate and cool waters. The Fin Whale was heavily hunted during the twentieth century and is listed as an endangered species. The International Whaling Commission (IWC) has issued a moratorium on commercial hunting of this whale.

More on the Fin Whale

EditCetaceans News

2014[edit]

January[edit]

The clymene dolphin (Stenella clymene) became the first confirmed naturally occurring marine mammal species when DNA analysis showed it to be descended from the spinner dolphin and the striped dolphin. [1]

2009[edit]

February[edit]

  • 10 February - Filipino fishermen have rescued around 200 melon-headed whales which were stranded in shallow waters off the coast of Bataan. Only three dolphins were reported to have died. more

January[edit]

2008[edit]

September[edit]

August[edit]

Edit Did you know...
Pakicetus was a prehistoric cetacean.
EditCategories

Subcategories of Cetaceans:

EditThings you can do..
Clipboard.svg

Here are some Cetaceans WikiProject tasks you can do.

Edit Selected picture
Photo credit: Jaime Ramos, U.S. Antarctic Program, National Science Foundation

Spyhopping is the act of coming out of the water vertically and momentarily staying out of the water in a manner akin to a human treading water. A powerful individual can spyhop as much as half of its body out of the water. The reasons for spyhopping are likely to be similar to those of breaching. Further spyhops may well be used so that the whale can examine its surroundings above the surface — for instance to look at boats. For this a spyhop may be more useful than a breach, because the view is held steady for a longer period of time.

Edit Selected media


Problems playing these files? See media help.
EditLists
EditRelated portals
Portal:Biology
Portal:Sharks
Portal:Sharks
Biology Sharks Mammals
Portal:Marine life
Marine Life
EditWikiProjects

The content you are reading was created by Wikipedia volunteers. See the WikiProject Cetaceans for more.

Related WikiProjects include:

See also Wikispecies, a Wikimedia project dedicated to the classification of species.

EditCetacean articles

Whale species

Andrews' Beaked WhaleBalaenoptera omuraiBelugaBlainville's Beaked WhaleBlue Whale Cscr-featured.svgBottlenose WhaleBowhead WhaleBryde's WhaleCuvier's Beaked WhaleDwarf Sperm WhaleFin Whale Cscr-featured.svgGervais' Beaked WhaleGiant beaked whaleGinkgo-toothed Beaked WhaleGray WhaleGray's Beaked WhaleHector's Beaked WhaleHubbs' Beaked WhaleHumpback Whale Cscr-featured.svgLayard's Beaked WhaleLongman's Beaked WhaleMelon-headed WhaleMinke WhaleNarwhalPerrin's Beaked WhalePygmy Beaked WhalePygmy Killer WhalePygmy Right WhalePygmy Sperm WhaleRight Whale Cscr-featured.svgSei Whale Cscr-featured.svgShepherd's Beaked WhaleSowerby's Beaked WhaleSpade Toothed WhaleSperm Whale Symbol support vote.svgStejneger's Beaked WhaleTrue's Beaked Whale

Dolphin species

Atlantic Spotted DolphinAtlantic White-sided DolphinAustralian Snubfin DolphinBaijiBotoChilean DolphinClymene DolphinCommerson's DolphinCommon Bottlenose DolphinDusky Dolphin Symbol support vote.svgFalse Killer WhaleFraser's DolphinGanges and Indus River DolphinHeaviside's DolphinHector's DolphinHourglass DolphinHumpback dolphinIndo-Pacific Bottlenose DolphinIrrawaddy DolphinKiller Whale Cscr-featured.svgLa Plata DolphinLong-beaked Common DolphinLong-finned pilot whalePacific White-sided DolphinPantropical Spotted DolphinPeale's DolphinPygmy Killer WhaleRight whale dolphinRisso's DolphinRough-toothed DolphinShort-beaked Common DolphinShort-finned pilot whaleSpinner DolphinStriped DolphinTucuxiWhite-beaked Dolphin

Porpoise species

Burmeister's PorpoiseDall's PorpoiseFinless PorpoiseHarbour PorpoiseSpectacled PorpoiseVaquita

Other articles

Aboriginal whalingAmbergrisAnimal echolocationArchaeocetiBaleenBaleen whaleBeached whaleBeaked WhaleBlowhole (biology)BlubberBottlenose dolphin Symbol support vote.svgCallosityCephalorhynchusCetaceaCetacean intelligenceCetologyCetology of Moby-DickCommon dolphinCumberland Sound BelugaDolphinDolphinarium Symbol support vote.svgDolphin drive hunting Symbol support vote.svgEvolution of cetaceansExploding whaleHarpoonHistory of whalingInstitute of Cetacean ResearchInternational Whaling CommissionLagenorhynchusMelon (whale)Mesoplodont WhaleMilitary dolphinMoby-DickMocha DickMonodontidaeOceanic dolphinOrcaellaPilot Whale Symbol support vote.svgPorpoiseRiver dolphinRiver Thames WhaleRorqualsSperm whale familySperm whalingSpermacetiStenellaTay WhaleThe Marine Mammal CenterToothed WhaleU.S. Navy Marine Mammal ProgramWhaleWhalingWhale and Dolphin Conservation SocietyWhale surfacing behaviourWhale oilWhale louseWhale songWhale watchingWolphin

Cscr-featured.svg Represents a Featured article, Symbol support vote.svg Represents a Good article
EditAssociated Wikimedia
Cetacea on Wikinews     Cetacea on Wikiquote     Cetacea on Wikibooks     Cetacea on Wikisource     Cetacea on Wikicommons Cetacea on Wiktionary
News Quotations Manuals & Texts Texts Images Dictionary
Wikinews-logo.svg
Wikiquote-logo.svg
Wikibooks-logo.svg
Wikisource-logo.svg
Commons-logo.svg
Wiktionary-logo-en.svg

Wikispecies
Species directory
Wikispecies-logo.svg
  1. ^ http://news.nationalgeographic.com/news/2014/01/140111-hybrid-dolphin-species-ocean-animal-science/